from tkinter import *
 
print('Введите начальную координату Х:')
X = int*(input())
print('Введите начальную координату Y:')
Y = int*(input())
print('Введите коэффициент координату N:')
N = int*(input())

coords = [0,0,10,0,10,10,20,10,20,20,0,20]

if N == 0 and X>=0 and X<=500 and Y>=0 and Y<=500:
     pass
else :
     if N < 0 and 0*N+X>0 and 0*N+Y>=0 and 20*N+X<=500 and 20*N+Y<=500:
         pass
else:
 if N < 0 and 20*N+X>0 and 20*N+Y>=0 and 0*N+X<=500 and 0*N+Y<=500:
         pass
else:
         print('Размер фигуры превышает максимальный размер поля')
         exit()

root = Tk()
root.title(''ИТ марафон")
root.geometry("500x500")
 
canvas = Canvas(bg="white", width=500, height=500)
canvas.pack(anchor=CENTER, expand=1)
 
canvas.create_polygon(coords[0] *N+X, coords[1] *N+Y,
                      coords[2] *N+X, coords[3] *N+Y,
                      coords[4] *N+X, coords[5] *N+Y,
                      coords[6] *N+X, coords[7] *N+Y,
                      coords[8] *N+X, coords[9] *N+Y,
                      coords[10] *N+X, coords[11] *N+Y)

 root.mainloop()
